598 



INDEX 



Dogfish — 



muscles of, 343. 



nervous system of, 364. 



sense organs of, 371. 



skeleton of, 344. 



skin of, 343. 



skull of, 346. 

 Dolphins, 461. 

 Dominant, no, 197, 527. 

 Dracunculus medinensis, 303, 304- 

 Drawing, 552. 

 Drugs, effect of, on Paramecium, 



133- 



on protoplasm, 86. 



See also references to various 

 parasites. 

 Duckmole, 459, 460. 

 Duct, bile, 48. 



of dogfish, 354. 



of frog, 48. 



of pigeon, 411. 



of rabbit, 442. 



of man, 476. 



mesonephric or Wolffian, 391, 



445- 

 in rabbit, 446. 

 of dogfish, 355. 

 of frog, 65. 

 of frog embryo, 503. 

 pancreatic, of dogfish, 354. 

 of man, 474, 476. 

 of pigeon, 410. 

 of rabbit, 442. 

 segmental, 503. 

 Ductus arteriosus, 384, 391, 449, 

 502. 

 Botalli, 385, 391, 501, 502. 

 Cuvieri, 362, 499. 

 deferens. See Vas deferens, 

 ejaculatorius, of cockroach, 280. 

 Dung, 6. 

 Duodenum, 47. 

 of dogfish, 353. 

 of frog, 47. 

 of pigeon, 410. 

 of rabbit, 442. 



Ear, 18. 

 of frog, 81. 

 of pigeon, 417. 

 of rabbit, 428, 458. 



Earthworm, alimentary canal of, 

 219. 



circulation of, 225. 



excretion in, 223. 



external features of, 215. 



external openings of, 188. 



habits of, 214. 



nephridium of, 223, 224, 225. 



nervous system of, 221. 



regeneration in, 229. 



reproduction of, 227. 



reproductive organs of, 229. 



section of, 218. 

 y sense organs of, 222. 

 IrTSchinodermata, 516. 

 Ectoderm, 230. 



of Hydra, 162, 230. 



of Triploblastica, 230. See also 

 Epidermis. 

 Ectoplasm, in. 



of Amoeba, III, 114. 



of Entamoeba, 144, 145. 



of Monocystis, 125. 



of Paramecium, 130. 



of Vorticella, 139. 

 Edentata, 462, 519. 

 Eel, 381. 

 Egg. See Ovum. 

 Elasmobranchii, 377, 517. 

 Elephants, 464, 470. 

 Embryo, 284. 



Embryology, 478, 510. See also 

 Life-history. 



suggests evolution, 522. 

 Encystment. See Cyst. 

 Endoderm, 230. 



of Hydra, 162, 230. 



of Triploblastica, 230. 

 Endolymph, 81. 

 Endophragmal skeleton, 24S. 

 Endoplasm, in. 



of Amoeba, ill. 



of Monocystis, 125. 



of Paramecium, 130, 131. 



of Vorticella, 139. 

 Endopodite, 241. 

 Endoskeleton, 344. 

 Endostyle, 333, 377. 

 Energid, 84. 

 Energy, of life, 2, 17. 



forms of, 4. 



